Mosby's 2014 Nursing Drug Reference (70 page)

BOOK: Mosby's 2014 Nursing Drug Reference
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Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

brinzolamide
ophthalmic

See
Appendix B

 

bromfenac (ophthalmic)

(brom′fen-ak)

Bromday

Func. class.:
Antiinflammatory (ophthalmic)

Chem. class.:
Nonsteroidal antiflammatory drug

ACTION:

The mechanism of action is thought to be ability to block prostaglandin synthesis by inhibiting cyclooxygenase 1 and 2. In studies performed in animal eyes, prostaglandins have been shown to produce disruption of the blood–aqueous humor barrier, vasodilation, increased vascular permeability, leukocytosis, and increased intraocular pressure

USES:

To reduce pain and inflammation after cataract surgery

CONTRAINDICATIONS:

Hypersensitivity to this product, sulfites, NSAIDs, salicylates

Precautions:
Bleeding disorders, complicated ocular surgery, corneal denervation, diabetes mellitus, rheumatoid ar
thritis, dry eye syndrome, pregnancy (C), breastfeeding

Do not administer while wearing contact lenses

DOSAGE AND ROUTES
Calculator

• Adult:
Instill 1 drop (0.09 mg) into affected eye twice daily beginning 24 hr before cataract surgery, continued on the day of surgery and through the first 14 days of the postoperative period

Available forms:
Ophthalmic solution 0.09%

Administer

• 
Apply topically to the eye

• 
Remove contact lenses before instilling solution. Contact lenses should not be worn during use of this product.

• 
Instruct patient on proper instillation of eye solution

• 
Do not touch the tip of the dropper to the eye, fingertips, or other surface

• 
Do not share bottle with other patients

• 
If more than one ophthalmic medication is being used, the medications should be administered at least 5 min apart

SIDE EFFECTS

CNS:
Headache

EENT:
Abnormal sensation in eye, conjunctival hyperemia, ocular irritation, ocular pain, ocular pruritus, conjunctival hyperemia, iritis, keratitis

PHARMACOKINETICS

Unknown

INTERACTIONS

Increase:
corneal erosion, poor healing—topical corticosteroids

Increase:
bleeding—anticoagulants

NURSING CONSIDERATIONS
Assess:
Eyes:

• 
For pain, inflammation, burning, redness after cataract surgery

• 
Identify if patient is using topical corticosteroids, anticoagulants, use cautiously in those using these products

Evaluate:

• 
Decreased pain and inflammation after cataract surgery

Teach patient/family:

• 
To apply topically to the eye

• 
To remove contact lenses before instilling solution; contact lenses should not be worn during use of this product

• 
Proper instillation of eye solution

• 
Not to touch the tip of the dropper to the eye, fingertips, or other surface

• 
Not to share bottle with other patients

• 
That if more than one ophthalmic medication is being used, the medications should be administered at least 5 minutes apart

Canada only   Side effects:
italics
= common;
bold
= life-threatening   
Nurse Alert

bromocriptine (Rx)

(broe-moe-krip′teen)

Cycloset, Parlodel

Func. class.:
Dopamine receptor agonist, antiparkinson agent

Chem. class.:
Ergot alkaloid derivative

Do not confuse:
Parlodel
/pindolol/Provera bromocriptine/benztropine/brimonidine

ACTION:

Inhibits prolactin release by activating postsynaptic dopamine receptors; activation of striatal dopamine receptors may be reason for improvement in Parkinson’s disease

USES:

Parkinson’s disease, amenorrhea/galactorrhea caused by hyperprolactinemia, infertility, acromegaly, pituitary adenomas, adjunct for type 2 diabetes

Unlabeled uses:
Neuroleptic malignant syndrome, alcoholism, premenstrual syndrome, mastalgia, cocaine withdrawal, premenstrual breast symptoms

CONTRAINDICATIONS:

Severe ischemic disease, uncontrolled hypertension, severe peripheral vascular disease; hypersensitivity to ergot, bromocriptine; migraine, preeclampsia

Precautions:
Pregnancy (B), breastfeeding, children, renal/hepatic disease, pituitary tumors, peptic ulcer disease, sulfite hypersensitivity, pulmonary fibrosis, dementia, GI bleeding, bipolar disorder

DOSAGE AND ROUTES
Calculator
Hyperprolactinemia

• Adult: PO
1.25-2.5 mg with meals; may increase by 2.5 mg q3-7days, usual range 2.5-15 mg/day

Acromegaly

• Adult: PO
1.25-2.5 mg × 3 days at bedtime; may increase by 1.25-2.5 mg q3-7days; usual range 20-30 mg/day, max 100 mg/day

Parkinson’s disease

• Adult: PO
1.25 mg bid with meals; may increase q2-4wk by 2.5 mg/day, max 100 mg/day; levodopa should be continued while bromocriptine is being instituted

Pituitary adenoma

• Adult: PO
1.25 mg bid-tid; may increase over several wk to 10-20 mg/day

Type 2 diabetes (Cycloset only)

• Adult: PO
(initially) 0.8 mg daily in
AM
within 2 hr of waking; titrate by 0.8 mg/day no more than weekly to max 1.6-4.8 mg/day

Neuroleptic malignant syndrome (unlabeled)

• Adult: PO
2.5-10 mg tid

Cocaine withdrawal (unlabeled)

• Adult: PO
0.625 mg qid × 42 days

Alcoholism (unlabeled)

• Adult: PO
7.5 mg/day

Mastalgia (unlabeled)

• Adult: PO
2.5-7.5 bid starting 10-14 days before menses; discontinue when menses begins

Available forms:
Caps 5 mg; tabs 2.5 mg; Cycloset tabs 0.8 mg

Administer:

• 
With meal to prevent GI symptoms

• 
At bedtime so that dizziness, orthostatic hypotension do not occur

SIDE EFFECTS

CNS:
Headache
, depression, restlessness, anxiety, nervousness, confusion,
seizures,
hallucinations
, dizziness, fatigue, drowsiness, abnormal involuntary movements, psychosis

CV:
Orthostatic hypotension, decreased B/P, palpitations, extrasystole,
shock,
dysrhythmias, bradycardia,
MI

EENT:
Blurred vision, diplopia, burning eyes, nasal congestion

GI:
Nausea, vomiting, anorexia
, cramps, constipation, diarrhea, dry mouth, GI hemorrhage

GU:
Frequency, retention, incontinence, diuresis

INTEG:
Rash on face, arms;
alopecia; coolness, pallor of fingers, toes; peripheral edema

PHARMACOKINETICS

Peak 1-3 hr, duration 4-8 hr, 90%-96% protein bound, half-life 3 hr, metabolized by liver (inactive metabolites), 85%-98% of dose excreted in feces, >90% of absorbed dose undergoes 1st-pass metabolism

INTERACTIONS

• 
Disulfiram-like reaction: alcohol

Increase:
action of antihypertensives, levodopa, chloramphenicol, probenecid, salicylates, sulfonamides

Decrease:
action of bromocriptine—phenothiazines, oral contraceptives, progestins, estrogens, haloperidol, loxapine, methyldopa, metoclopramide, MAOIs, reserpine

Decrease/increase:
effect of Cyclosert-CYP3A4 inhibitors/inducers

Decrease:
effect of Cyclosert-butyrophenones, metoclopramide, phenothiazine, thioxanthenes

Drug/Lab Test

Increase:
growth hormone, AST, ALT, CK, BUN, uric acid, alk phos

NURSING CONSIDERATIONS
Assess:

• 
B/P; establish baseline, compare with other readings; this product decreases B/P and causes orthostatic hypotension

• 
Parkinson’s symptoms:
pill rolling, shuffling gait, restlessness, tremors, postural instability before and during treatment

• 
Neuroleptic malignant syndrome:
decreased temp, seizures, sweating, pulse indicates resolution of symptoms

• 
Change in size of soft-tissue volume with acromegaly

• 
Pregnancy:
may cause postpartum conception, use pregnancy testing q4wk or if menstruation does not occur

Perform/provide:

• 
Storage at room temp in tight, light-resistant container

Evaluate:

• 
Therapeutic response (Parkinson’s disease): decreased dyskinesia, slow movements, drooling

Teach patient/family:

• 
That tabs may be crushed, mixed with food; Cyclosert to be taken within 2 hr of rising

• 
To change position slowly to prevent orthostatic hypotension

• 
To use contraceptives during treatment with this product; that pregnancy may occur; to use methods other than oral contraceptives/subdermal implants

• 
That therapeutic effect for Parkinson’s disease may take 2 mo

• 
To avoid hazardous activity if dizziness occurs

• 
To report symptoms of MI immediately

• 
To take with food, avoid alcohol

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